Banks decide if your 3 percent rate moves to the next house

Rep. Tom Kean introduced it August 3 2026. It tells Fannie Mae and Freddie Mac to buy portable mortgages within 180 days if law passes. The exact text says the transfer only happens when the mortgagee (lender) permits it. Existing loans already in securities stay locked. FHFA data on the 2.4 trillion lock-in value and 1.72 million blocked sales checks out from their own papers. GovTrack gives it tiny odds of passing.